No, it was not a spark, but a rune that was even smaller than a spark. However, it was mysterious and complicated, filled with details.
Then, hundreds of runes, which looked as if they had been created by a master of micro-carving, were turned into spinning tops by an invisible whip. They quickly spun around the spirit magnet that Meng Chao had stabbed into the core of the detonation system. Soon, they were all arranged in an orderly manner, forming a three-dimensional rune formation with strict reinforcements.
The moment the rune array was formed, flames and electric arcs as thin as hair burst out from the tiny runes. They quickly swam around the rune array before spreading out in all directions.